code: def make_node(self, x):
      x = pt.as_tensor_variable(x)
      return Apply(self, [x], [x.type()])
  
imports: import numpy
  import pytest
  import pytensor
  from pytensor import tensor
  from pytensor.graph.basic import Apply
  from pytensor.link.c.op import COp, ExternalCOp
  from pytensor.link.c.params_type import Params, ParamsType
  from pytensor.link.c.type import EnumList, Generic
  from pytensor.scalar import ScalarType
  from pytensor.tensor.type import TensorType, matrix
  from tests import unittest_tools
label_desc: Use image node_id 2 for calling the QuadraticOpFunc obj's underlying member method code with example usage: obj.make_node(x) and returns: Apply